I got 6 cornish cross chicks on May 22nd. One of them was really wobbly and just wouldn't grow, for a few days wouldn't eat unless I force fed it mashed feed with sugar water. I've acually gotten kind of attached to him.... Right now at about 2 weeks old my other chicks are around 20.5 ounces and he is at 5.5. He is bow-legged and peeps loudly all the time like just breathing hurts him. I decided to cull him tomorrow morning, or rather, have my dad cull him as I couldn't do it myself. He thinks cutting its head off would be tge best way. Any tips? I want it to be as humane as possible.